Studies of silyl and germyl Group VI species. Part IV. Dimethyl- and tetramethyl-disilyl chalcogenides and related species

Abstract

The symmetrically substituted disilyl chalcogenides (MenH3−nSi)2E where E = O, S, Se, Te; n = 0 → 3, have been prepared and characterized spectroscopically and by cleavage reactions. The synthetic routes include reactions of halogenosilanes with water, mercury(II) sulfide, lithium telluride, and complex thio- and seleno-aluminates. The spectroscopic properties of the(MeH2Si)2E and (Me2HSi)2E species, which have not been reported previously, are discussed in some detail.